Bit holder

a technology of power tools and bit holders, which is applied in the direction of chucks, mechanical equipment, manufacturing tools, etc., can solve the problems of inordinately high manufacturing cost and difficulty in manufacturing of chuck assemblies or bit holders of this type, and achieve the effects of increasing the need and desirability of wider versatility in the use of power tools and hand tools, facilitating insertion, and facilitating insertion

Inactive Publication Date: 2005-08-16
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003]Auxiliary chucks for power and hand tools have become increasingly common, especially as the need and desirability of wider versatility in the use of power tools and hand tools has increased. Such auxiliary chuc...

Problems solved by technology

Although this basic design has performed well, chuck assemblies or bit holders of this type have been found to be inordinately expensive and difficult to manufacture due to the relativ...

Method used

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Examples

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Embodiment Construction

[0016]FIGS. 1 through 6 depict an exemplary preferred embodiment of a chuck assembly or tool bit holder according to the present invention, shown merely for purposes of illustration. One skilled in the art will readily recognize, from the following discussion and the accompanying drawings, that chuck assemblies or bit holders of configurations other than that of this exemplary illustration can also advantageously employ the principles of the present invention.

[0017]In FIGS. 1 through 6, an exemplary chuck assembly or bit holder 10 is attachable to a power tool or to a hand tool 18 to be driven for rotation about an axis 12 (shown in FIG. 3). The chuck assembly 10 is adapted to removably receive a tool bit 14 having a generally hex-shaped shank 15 with a circumferential recess 16 formed therein. The tool bit 14 can be any of a number of well-known bits, including drill bits, nut driver bits, screwdriver bits, or other types of fastener driver bits, for example.

[0018]As best shown in ...

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PUM

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Abstract

A “snap-in” bit chuck assembly for a rotary hand or powered tool, includes a body having a hex shank at its rearward end and a retraction collar slidably disposed on the body. The body has a coaxial hex socket formed therein to allow a tool bit to be inserted thereinto. A coil spring biases the retraction collar forwardly and biases a retaining clip toward the bottom of an angular slot formed in the body. The bit is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot. The bit is biased out of a locked position by a plunger that ensures that the bit remains disengaged when the retraction collar is released.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 60 / 390,021, filed on Jun. 18, 2002. The disclosure of the above application is incorporated herein by reference.FIELD OF THE INVENTION[0002]The invention relates generally to power or hand tool bit holders, variously known as “auxiliary chucks”, “chucks”, or “adapters”, for removably receiving tool bits, such as fastener drivers, drill bits, or the like, for rotation therewith when the power tool is actuated or the hand tool is manually rotated. More particularly, the present invention relates to chuck assemblies or adapters configured for rapid and easy insertion and removal of a tool bit.BACKGROUND AND SUMMARY OF THE INVENTION[0003]Auxiliary chucks for power and hand tools have become increasingly common, especially as the need and desirability of wider versatility in the use of power tools and hand tools has increased. Such auxiliary chucks allow the hand or p...

Claims

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Application Information

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IPC IPC(8): B25B23/00
CPCB25B15/001B25B23/0035Y10T279/3481Y10T279/17811
Inventor PETERS, MICHAEL P.ERVIN, JENNIFER R.BAILEY, TIMOTHY B.
Owner BLACK & DECKER INC
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